The youngsters, from St Nicholas at Wade Primary School near Broadstairs, entertained visitors with a presentation about their recent potato-growing project.
The project, organised by St Nicholas Court Farms in conjunction with Tesco, involved the pupils tracking the progress of locally grown potatoes from fields in Thanet to the Tesco Extra supermarket at Westwood Shopping Centre.
The class visited St Nicholas Court Farms to see how potatoes are planted, harvested and packed - and studied the history of potatoes and their importance as part of a healthy diet.
Led by teacher David Hannan, the children also grew a variety of potatoes in the playground, including Desiree, King Edward, Marfona and Maris Piper.
St Nicholas Court Farms marketing manager Eddie Knowles said: "The pupils really enjoy finding out how local potatoes get from field to fork, and get a great kick from growing their own food.
"The project has been so successful that we are now looking at rolling it out to other Kent schools and local Tesco stores."